Bilingual lexicon extraction from comparable corpora: A comparative study (CROSBI ID 581475)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Ljubešić, Nikola ; Fišer, Darja ; Vintar, Špela ; Pollak, Senja
engleski
Bilingual lexicon extraction from comparable corpora: A comparative study
This paper presents a comparative study of the impact of the key parameters for bilingual lexicon extraction for nouns from comparable corpora. The parameters we analyzed are: corpus size and comparability, dictionary size and type, feature selection for context vectors and window size, and association and similarity measures. Evaluation against the gold standard shows that window size of 7 with encoded position yields best results. The consistently best-performing association and similarity measures are Jensen-Shannon divergence with log-likelihood. We have shown that very good results can be achieved with small-sized but purpose-built seed lexicons and that problems arising from dissimilarities between the source and the target corpus can be compensated with their sufficient size.
comparable corpora; bilingual lexicon extraction
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Podaci o prilogu
2011.
objavljeno
Podaci o matičnoj publikaciji
First International Workshop on Lexical Resources, An ESSLLI 2011 Workshop, Ljubljana, Slovenia - August 1-5, 2011
Podaci o skupu
First International Workshop on Lexical Resources
predavanje
01.08.2011-05.08.2011
Ljubljana, Slovenija